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DOP-C02 · Question #101

A company has 20 service teams. Each service team is responsible for its own microservice. Each service team uses a separate AWS account for its microservice and a VPC with the 192.168.0.0/22 CIDR blo

The correct answer is B. Create a Network Load Balancer (NLB) in each of the microservice VPCs. Use AWS PrivateLink to. All 20 services team in different separate AWS accounts are using the same CIDR block, which means they are overlapping CIDR.

Submitted by ashley.k· Mar 6, 2026Resilient Cloud Solutions

Question

A company has 20 service teams. Each service team is responsible for its own microservice. Each service team uses a separate AWS account for its microservice and a VPC with the 192.168.0.0/22 CIDR block. The company manages the AWS accounts with AWS Organizations. Each service team hosts its microservice on multiple Amazon EC2 instances behind an Application Load Balancer. The microservices communicate with each other across the public internet. The company's security team has issued a new guideline that all communication between microservices must use HTTPS over private network connections and cannot traverse the public internet. A DevOps engineer must implement a solution that fulfills these obligations and minimizes the number of changes for each service team. Which solution will meet these requirements?

Options

  • ACreate a new AWS account in AWS Organizations. Create a VPC in this account, and use AWS
  • BCreate a Network Load Balancer (NLB) in each of the microservice VPCs. Use AWS PrivateLink to
  • CCreate a Network Load Balancer (NLB) in each of the microservice VPCs. Create VPC peering
  • DCreate a new AWS account in AWS Organizations. Create a transit gateway in this account, and use

How the community answered

(51 responses)
  • A
    8% (4)
  • B
    49% (25)
  • C
    31% (16)
  • D
    12% (6)

Explanation

All 20 services team in different separate AWS accounts are using the same CIDR block, which means they are overlapping CIDR.

Topics

#AWS PrivateLink#cross-account networking#overlapping CIDR#microservices

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